Dynamical Evolution of Disk Galaxies
| dc.creator | Sellwood, J. A. | |
| dc.date | 2008-03-11 | |
| dc.date | 2008-03-14 | |
| dc.date.accessioned | 2026-07-07T09:26:32Z | |
| dc.date.available | 2026-07-07T09:26:32Z | |
| dc.description | Spiral patterns are important agents of galaxy evolution. In this review, I describe how the redistribution of angular momentum by recurrent transient spiral patterns causes the random speeds of stars to rise over time, metallicity gradients to be reduced, and drives large-scale turbulence in the disk, which could be important for galactic dynamos. I also outline a possible mechanism for the recurrence of spiral instabilities and supporting evidence from solar neighborhood kinematics. Finally, I confirm that cloud scattering alone would predict the local velocity ellipsoid to be flattened, contrary to long-held expectations. | |
| dc.description | 10 pages, 1 figure - to appear in "Formation and Evolution of Galaxy Disks" eds Corsini & Funes ASP Conference series - typos fixed | |
| dc.identifier | https://arxiv.org/abs/0803.1574 | |
| dc.identifier | http://arxiv.org/abs/0803.1574 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/156782 | |
| dc.subject | Astrophysics | |
| dc.title | Dynamical Evolution of Disk Galaxies | |
| dc.type | text |